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age related cognitive decline

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https://www.readbyqxmd.com/read/27913559/physical-activity-as-intervention-for-age-related-loss-of-muscle-mass-and-function-protocol-for-a-randomised-controlled-trial-the-lisa-study
#1
Christian Skou Eriksen, Ellen Garde, Nina Linde Reislev, Cathrine Lawaetz Wimmelmann, Theresa Bieler, Andreas Kraag Ziegler, Anne Theil Gylling, Kasper Juel Dideriksen, Hartwig Roman Siebner, Erik Lykke Mortensen, Michael Kjaer
INTRODUCTION: Physical and cognitive function decline with age, accelerating during the 6th decade. Loss of muscle power (force×velocity product) is a dominant physical determinant for loss of functional ability, especially if the lower extremities are affected. Muscle strength training is known to maintain or even improve muscle power as well as physical function in older adults, but the optimal type of training for beneficial long-term training effects over several years is unknown...
December 2, 2016: BMJ Open
https://www.readbyqxmd.com/read/27911321/the-effects-of-meditation-on-grey-matter-atrophy-and-neurodegeneration-a%C3%A2-systematic-review
#2
Nicole Last, Emily Tufts, Leslie E Auger
The present systematic review is based on the premise that a variety of neurodegenerative diseases are accompanied by grey matter atrophy in the brain and meditation may impact this. Given that age is a major risk factor for many of these progressive and neurodegenerative diseases and that the percentage of the population over the age of 65 is quickly increasing, there is an obvious need for prompt treatment and prevention advances in research. As there is currently no cure for Alzheimer's disease and other neurodegenerative diseases, many are seeking non-pharmacological treatment options in attempts to offset the disease-related cognitive and functional declines...
November 26, 2016: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/27910252/memory-performance-on-the-story-recall-test-and-prediction-of-cognitive-dysfunction-progression-in-mild-cognitive-impairment-and-alzheimer-s-dementia
#3
Jong-Hwan Park, Hyuntae Park, Sang Wuk Sohn, Sungjae Kim, Kyung Won Park
AIM: To determine the factors that influence diagnosis and differentiation of patients with mild cognitive impairment (MCI) and Alzheimer's dementia (AD) by comparing memory test results at baseline with those at 1-2-year follow up. METHODS: We consecutively recruited 23 healthy participants, 44 MCI patients and 27 patients with very mild AD according to the National Institute of Neurological and Communicative Diseases and Stroke/Alzheimer's Disease and Related Disorder Association criteria for probable Alzheimer's disease and Petersen's clinical diagnostic criteria...
December 1, 2016: Geriatrics & Gerontology International
https://www.readbyqxmd.com/read/27905651/-current-evidence-on-health-benefits-of-the-mediterranean-diet
#4
Catalina Dussaillant, Guadalupe Echeverría, Inés Urquiaga, Nicolás Velasco, Attilio Rigotti
The Mediterranean diet is currently considered a functional diet with an increasing amount of scientific evidence that supports its beneficial effects in human health. Several observational cross-sectional and prospective cohort studies show an association between this diet and a lower prevalence and incidence of chronic diseases, such as cardiovascular disease, cancer, metabolic syndrome, diabetes, and neurodegenerative diseases as well as a reduced overall mortality. Additionally, clinical interventional studies, particularly the PREDIMED (Prevención con Dieta Mediterránea) initiative, have shown, with high quality scientific evidence, that a Mediterranean diet -supplemented either with olive oil or nuts- can lower by 30% the incidence of cardiovascular disease, reverse the metabolic syndrome, and prevent the development of diabetes and aging-related cognitive decline...
August 2016: Revista Médica de Chile
https://www.readbyqxmd.com/read/27904476/impairment-of-the-nerve-growth-factor-pathway-driving-amyloid-accumulation-in-cholinergic-neurons-the-incipit-of-the-alzheimer-s-disease-story
#5
REVIEW
Viviana Triaca, Pietro Calissano
The current idea behind brain pathology is that disease is initiated by mild disturbances of common physiological processes. Overtime, the disruption of the neuronal homeostasis will determine irreversible degeneration and neuronal apoptosis. This could be also true in the case of nerve growth factor (NGF) alterations in sporadic Alzheimer's disease (AD), an age-related pathology characterized by cholinergic loss, amyloid plaques and neurofibrillary tangles. In fact, the pathway activated by NGF, a key neurotrophin for the metabolism of basal forebrain cholinergic neurons (BFCN), is one of the first homeostatic systems affected in prodromal AD...
October 2016: Neural Regeneration Research
https://www.readbyqxmd.com/read/27893859/hippocampal-calcification-on-computed-tomography-in-relation-to-cognitive-decline-in-memory-clinic-patients-a-case-control-study
#6
Remko Kockelkoren, Jill B De Vis, Willem P Th M Mali, Jeroen Hendrikse, Pim A de Jong, Annemieke M Rozemuller, Huiberdina L Koek
BACKGROUND: It was recently shown that calcification of the hippocampus can be detected on computed tomography (CT) images and these calcifications occur in up to 20% of people over 50 years of age. However, little is known about hippocampal calcification and its relation to cognition and cognitive decline. Therefore, the aim of this study was to (1) determine the prevalence of hippocampal calcification on CT in memory clinic patients controls, and (2) to assess its relation with cognitive decline...
2016: PloS One
https://www.readbyqxmd.com/read/27889886/association-of-midlife-smoking-status-with-change-in-processing-speed-and-mental-flexibility-among-hiv-seropositive-and-hiv-seronegative-older-men-the-multicenter-aids-cohort-study
#7
Wajiha Z Akhtar-Khaleel, Robert L Cook, Steve Shoptaw, Eric N Miller, Ned Sacktor, Pamela J Surkan, Jim Becker, Linda A Teplin, Rebecca J Beyth, Catherine Price, Michael Plankey
Smoking is a potential risk factor for age-related cognitive decline. To date, no study has examined the association between smoking and cognitive decline in men living with human immunodeficiency virus (HIV). The aim of this present study is to examine whether smoking status and severity in midlife is associated with a rate of decline in cognitive processing speed among older HIV-seropositive and HIV-seronegative men who have sex with men. Data from 591 older HIV-seropositive and HIV-seronegative men who have sex with men from the Multicenter AIDS Cohort Study were examined...
November 26, 2016: Journal of Neurovirology
https://www.readbyqxmd.com/read/27889579/protective-effects-of-high-tryptophan-diet-on-aging-induced-passive-avoidance-impairment-and-hippocampal-apoptosis
#8
Giuseppe Musumeci, Paola Castrogiovanni, Marta Anna Szychlinska, Rosa Imbesi, Carla Loreto, Sergio Castorina, Salvatore Giunta
In our previous work we have shown that L-Tryptophan (TrP) enriched diet prevents the age-induced decline of hippocampal Serotonin (5-HT) production. Considering that loss or reduction in 5-HT neurotransmission may contribute to age-related cognitive decline, here we have investigated the effect of such diet on passive avoidance (PA) behavior, cell death, pro- and anti- apoptotic molecules (BAX, Bcl-2 and Caspase-3) and an important transcription factor involved in synaptic plasticity and memory (CREB). The increase in 5-HT neurotransmission in the Hippocampus (Hp) of aged rats was induced by 1 month of high TrP administration...
November 23, 2016: Brain Research Bulletin
https://www.readbyqxmd.com/read/27888736/activity-engagement-and-physical-function-in-old-age-sample
#9
Krupa N Shah, Feng V Lin, Fang Yu, James M McMahon
OBJECTIVES: To describe the patterns of engagement in mental, physical, and social activity (MA, PA, and SA) and to examine the relationship between combined activity engagement and physical function among community-dwelling older adults. DESIGN: Cross-sectional correlational study. SETTING: Multiple communities. PARTICIPANTS: A total of 466 individuals aged 55 years or older. MEASUREMENTS: Physical function was assessed using grip strength and gait speed...
November 17, 2016: Archives of Gerontology and Geriatrics
https://www.readbyqxmd.com/read/27887984/impact-of-%C3%AE-hydroxy-%C3%AE-methylbutyrate-hmb-on-age-related-functional-deficits-in-mice
#10
Michael Munroe, Yair Pincu, Jennifer Merritt, Adam Cobert, Ryan Brander, Tor Jensen, Justin Rhodes, Marni D Boppart
β-Hydroxy β-methylbutyrate (HMB) is a metabolite of the essential amino acid leucine. Recent studies demonstrate a decline in plasma HMB concentrations in humans across the lifespan, and HMB supplementation may be able to preserve muscle mass and strength in older adults. However, the impact of HMB supplementation on hippocampal neurogenesis and cognition remains largely unexplored. The purpose of this study was to simultaneously evaluate the impact of HMB on muscle strength, neurogenesis and cognition in young and aged mice...
November 22, 2016: Experimental Gerontology
https://www.readbyqxmd.com/read/27886564/c-reactive-protein-is-related-to-future-cognitive-impairment-and-decline-in-elderly-individuals-with-cardiovascular-disease
#11
Galit Weinstein, Miriam Lutski, Uri Goldbourt, David Tanne
AIMS: To explore the association of C-reactive protein (CRP) plasma levels with subsequent cognitive performance and decline among elderly individuals with pre-existing cardiovascular disease (CVD), and to assess the role of cerebrovascular indices in this relationship. METHODS: CRP levels were measured in a subgroup of individuals with chronic CVD, who previously participated in a secondary prevention trial. Cognitive performance was evaluated 14.7±1.9 and 19...
November 9, 2016: Archives of Gerontology and Geriatrics
https://www.readbyqxmd.com/read/27886529/autobiographical-and-episodic-memory-deficits-in-mild-traumatic-brain-injury
#12
Jeffrey D Wammes, Tyler J Good, Myra A Fernandes
Those who have suffered a concussion, otherwise known as a mild traumatic brain injury (mTBI), often complain of lingering memory problems. However, there is little evidence in the behavioral literature reliably demonstrating memory deficits. Thus, in the present study, cognitive profiles including measures of general executive functioning and processing speed, as well as episodic and semantic memory were collected in younger and older adult participants with or without a remote (>1year prior to testing) mTBI...
November 22, 2016: Brain and Cognition
https://www.readbyqxmd.com/read/27885064/differential-effects-of-aging-on-motor-and-cognitive-functioning-in-multiple-sclerosis
#13
Shumita Roy, Seth Frndak, Allison S Drake, Lauren Irwin, Robert Zivadinov, Bianca Weinstock-Guttman, Ralph Hb Benedict
BACKGROUND: Multiple sclerosis (MS) patients are impaired in motor and cognitive performance, but the extent to which these deficits are magnified by aging is unknown. In one prior study, differences in cognitive processing speed between MS patients and healthy individuals were of similar magnitude across the lifespan. Here, we have improved on this work by expanding assessment to multiple cognitive domains and motor functioning. OBJECTIVE: To determine whether the degree of cognitive and motor dysfunction in MS is magnified with increasing age...
November 24, 2016: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/27883994/monitoring-huntington-s-disease-mortality-across-a-30-year-period-geographic-and-temporal-patterns
#14
Germán Sánchez-Díaz, Greta Arias-Merino, Ana Villaverde-Hueso, Antonio Morales-Piga, Ignacio Abaitua-Borda, Manuel Hens, Eva Bermejo-Sánchez, Manuel Posada de la Paz, Verónica Alonso-Ferreira
BACKGROUND: Huntington's disease (HD) is a progressive neurodegenerative condition characterized by chorea, dystonia, behavioral disturbances and cognitive decline. The aim of this study is to assess temporal and spatial changes on mortality attributable to HD over 30 years in Spain. METHODS: HD data were extracted from the nationwide mortality registry for the period 1984-2013. Annual and 5-year gender- and age-specific rates adjusted for the standard European population were calculated...
November 25, 2016: Neuroepidemiology
https://www.readbyqxmd.com/read/27883290/behavioral-evidence-for-a-differential-modulation-of-semantic-processing-and-lexical-production-by-aging-a-full-linear-mixed-effects-modeling-approach
#15
Naïla Boudiaf, Rafael Laboissière, Émilie Cousin, Nathalie Fournet, Alexandre Krainik, Monica Baciu
The effect of normal aging on lexical production and semantic processing was evaluated in 72 healthy participants. Four tasks were used, picture naming (PN), picture categorization (PC), numerical judgment (NJ), and color judgment (CJ). The dependence of reaction time (RT) and correct responses with age was accounted by mixed-effects models. Participants underwent neuropsychological testing for verbal, executive, and memory functions. The RTs increase significantly with age for all tasks. After parceling out the non-specific cognitive decline, as reflected by the NJ task, the RT for the PN task decreases with age...
November 24, 2016: Neuropsychology, Development, and Cognition. Section B, Aging, Neuropsychology and Cognition
https://www.readbyqxmd.com/read/27882528/an-empirical-comparison-of-the-eq-5d-5l-demqol-u-and-demqol-proxy-u-in-a-post-hospitalisation-population-of-frail-older-people-living-in-residential-aged-care
#16
Julie Ratcliffe, Thomas Flint, Tiffany Easton, Maggie Killington, Ian Cameron, Owen Davies, Craig Whitehead, Susan Kurrle, Michelle Miller, Enwu Liu, Maria Crotty
OBJECTIVE: To empirically compare the measurement properties of the DEMQOL-U and DEMQOL-Proxy-U instruments to the EQ-5D-5L and its proxy version (CEQ-5D-5L) in a population of frail older people living in residential aged care in the post-hospitalisation period following a hip fracture. METHODS: A battery of instruments to measure health-related quality of life (HRQoL), cognition, and clinical indicators of depression, pain and functioning were administered at baseline and repeated at 4 weeks' follow-up...
November 23, 2016: Applied Health Economics and Health Policy
https://www.readbyqxmd.com/read/27881596/combined-iron-deficiency-and-low-aerobic-fitness-doubly-burden-academic-performance-among-women-attending-university
#17
Samuel P Scott, Mary Jane De Souza, Karsten Koehler, Laura E Murray-Kolb
BACKGROUND: Academic success is a key determinant of future prospects for students. Cognitive functioning has been related to nutritional and physical factors. Here, we focus on iron status and aerobic fitness in young-adult female students given the high rate of iron deficiency and declines in fitness reported in this population. OBJECTIVES: We sought to explore the combined effects of iron status and fitness on academic success and to determine whether these associations are mediated by cognitive performance...
November 23, 2016: Journal of Nutrition
https://www.readbyqxmd.com/read/27881050/pharmaceutical-rejuvenation-of-age-associated-decline-in-spatial-memory
#18
Andrew R Mendelsohn, James Larrick
Spatial memory and cognition decline during aging. Montelukast, an FDA approved drug for the treatment of asthma can restore spatial memory in old rats to levels similar to those of young animals. Treatment improves three hallmarks of aging in the brain: reducing microglial- mediated neuroinflammation, brain blood barrier permeability and increasing neurogenesis in the hippocampus although not completely to youthful levels.  Other aging-associated parameters, such as reduced synaptic density, are not affected, suggesting that anti-aging therapeutics may be further optimized...
November 23, 2016: Rejuvenation Research
https://www.readbyqxmd.com/read/27879030/age-related-decline-in-task-switching-is-linked-to-both-global-and-tract-specific-changes-in-white-matter-microstructure
#19
Todd A D Jolly, Patrick S Cooper, Jaime L Rennie, Christopher R Levi, Rhoshel Lenroot, Mark W Parsons, Patricia T Michie, Frini Karayanidis
Task-switching performance relies on a broadly distributed frontoparietal network and declines in older adults. In this study, they investigated whether this age-related decline in task switching performance was mediated by variability in global or regional white matter microstructural health. Seventy cognitively intact adults (43-87 years) completed a cued-trials task switching paradigm. Microstructural white matter measures were derived using diffusion tensor imaging (DTI) analyses on the diffusion-weighted imaging (DWI) sequence...
November 23, 2016: Human Brain Mapping
https://www.readbyqxmd.com/read/27878757/targeting-ccr3-to-reduce-amyloid-%C3%AE-production-tau-hyperphosphorylation-and-synaptic-loss-in-a-mouse-model-of-alzheimer-s-disease
#20
Chunyan Zhu, Bing Xu, Xiaohong Sun, Qiwen Zhu, Yi Sui
The majority of Alzheimer's disease (AD) patients have a late onset, and chronic neuroinflammation, characterized by glial activation and secretion of pro-inflammatory cytokines and chemokines, plays a role in the pathogenesis of AD. The chemokine CCL11 has been shown to be a causative factor of cognitive decline in the process of aging, but little is known whether it is involved in the pathogenesis of AD. In the present study, we showed that CCR3, the receptor for CCL11, was expressed by hippocampal neurons and treatment of primary hippocampal neuronal cultures (14 days in vitro) with CCL11 resulted in activation of cyclin-dependent kinase 5 and glycogen synthase kinase-3β, associated with elevated tau phosphorylation at multiple sites...
November 23, 2016: Molecular Neurobiology
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